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Regal Verbena

#644ad2
Notes

Regal Verbena (#644AD2) is a true indigo with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (251°, 60%, 56%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#644ad2
RGB
rgb(100, 74, 210)
HSL
hsl(251, 60%, 56%)
HWB
hwb(251 29% 18%)
OKLCH
oklch(51.6% 0.199 285.9)
HSV
hsv(251, 65%, 82%)
LAB
lab(41.62% 45.67 -66.69)
LCH
lch(41.62% 80.83 304.40)
CMYK
cmyk(52%, 65%, 0%, 18%)

Etymology

Regal
adjective

Latin rēgālis, kingly — derived from rēx (king). As a color modifier, regal implies a saturated-and-royal-formality quality, the deep-rich color of British-Coronation-period royal vestment-and-mantle and Imperial-State-Crown regalia. Sits at the bold-and-imperial end of the grid, parallel to sovereign and royal in usage.

Verbena
noun

The cultivated genus Verbena — particularly Verbena × hybrida, the trailing bedding plant in the Verbenaceae family with violet-and-magenta flat-topped cymes used in Mediterranean container gardens. Verbena color refers to a fully bloomed Verbena bonariensis cyme: a saturated, slightly cool deep blue-violet with the velvet finish of dense small four-petaled flowers. Slightly cooler than Vervain and warmer than Liatris.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

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Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#644ad2
Original
#0066d6
Protanopia
#005ecf
Deuteranopia
#386c87
Tritanopia
#595959
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
6.08:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.45:1

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